This website gives 3 freeware alternatives to any paid software.

Webex is a web application using which you can conduct online meetings. Apart from online meetings, Webex also supports web conferencing and video conferencing. The service allows information to be shared simultaneously, across geographically dispersed locations in real-time which can help professionals and businesses to save a lot on travel expenses. Webex almost creates a virtual environment for you from wherever you want to be. So you can easily demonstrate your work along with broadcasting a video of yourself along with your voice. Apart from that you can even record this conversation which can be helpful at certain times.

Here are free alternatives to Webex that provide some of the similar features.

imo instant messenger

imo instant messenger is the best free alternative to Webex. imo instant messenger is a web application which enables you to integrate and organize your multiple chat accounts from multiple chat service at a single place. Using imo instant messenger you can login to your Facebook, Google Talk, Skype, MSN, ICQ/AOL/AIM, Yahoo, Jabber, and MySpace account. If you use imo instant messenger, you will not have to worry about opening separate chat applications and browser tabs and you can control everything from just one window in your browser. You don’t need to create a seperate account for imo instant messenger. Just use the username and passwords for respective chat account and you are ready to go.

GoLiveRoom

GoLiveRoom is another good free alternative to Webex. GoLiveRoom is a online services using which you can organise and attend online meetings in the meeting rooms. You can conduct meetings, seminars, remote classrooms, product demonstrations and online sales and it is a very effective tool for the same. GoLiveRoom has many features like Audio & Video Presentation, Screen Sharing, Multiple User Chat. GoLiveRoom doesn’t need an installation and you can initiate a meeting right from your desired web browser and you don’t need to worry about the OS platform you are using. You don’t need to Sign up or Register with GoLiveRoom to conduct Webinars.

OnWebinar

OnWebinar is a good replacement for Webex. OnWebinar is a free web application using which you can conduct online meetings, online coaching, distance learning, video conferencing, etc. The best part of OnWebinar is that using it you can run these services directly from your own Website and you would not require to install any additional applications to do so. This helps businesses by adding a tool on their website which they can use to interact with their customers in real time along with audio and video capabilities which is a boon for demonstrating certain products to the prospective customers.